One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,13,8,14,6,12)(3,15,20,33,18,9,19,34)(4,21,25,10,26,37,24,38)(5,11,29,41,28,40,30,42)(16,35,22,43,46,58,47,31)(17,32,48,59,49,44,50,60)(23,51,53,39,27,55,54,36)(45,62,56,63,64,61,52,57)(1,3,6,19,8,18,7,20)(2,9,13,34,14,15,12,33)(4,22,24,16,26,47,25,46)(5,17,29,48,28,49,30,50)(10,35,37,43,38,58,21,31)(11,32,42,60,40,44,41,59)(23,52,53,45,27,56,54,64)(36,61,55,63,39,62,51,57)(1,4,8,26)(2,10,14,38)(3,16,18,46)(5,27,28,23)(6,25,7,24)(9,31,15,43)(11,39,40,36)(12,37,13,21)(17,45,49,64)(19,22,20,47)(29,53,30,54)(32,57,44,63)(33,35,34,58)(41,51,42,55)(48,52,50,56)(59,61,60,62)(1,5,6,29,8,28,7,30)(2,11,12,41,14,40,13,42)(3,17,19,48,18,49,20,50)(4,23,24,53,26,27,25,54)(9,32,33,59,15,44,34,60)(10,36,21,51,38,39,37,55)(16,45,47,56,46,64,22,52)(31,57,58,62,43,63,35,61)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.